London | 25-ITP-Sep | Payman Issa Baiglu | sprint 3 | 2-practice-tdd

Sprint-2/1-key-errors/0.js

@@ -10,4 +10,4 @@ function capitalise(str) {
 }
 
 // =============> write your explanation here
-// =============> write your new code here
+// =============> write your new code here

Sprint-3/1-implement-and-rewrite-tests/implement/3-get-card-value.js

@@ -8,7 +8,7 @@
 // write one test at a time, and make it pass, build your solution up methodically
 // just make one change at a time -- don't rush -- programmers are deep and careful thinkers
 function getCardValue(card) {
-  if (rank === "A") {
+  if (card === "A♠") {
     return 11;
   }
 }

Sprint-3/2-practice-tdd/count.js

@@ -1,5 +1,12 @@
 function countChar(stringOfCharacters, findCharacter) {
-  return 5
-}
+  let count = 0;
+  for (let i = 0; i < stringOfCharacters.length; i++) {
+    if (stringOfCharacters[i] === findCharacter) {
+      count++;
+    }
+  }
+  return count;
+}    
+console.log(countChar("hello world!", "l"));
 
 module.exports = countChar;

Sprint-3/2-practice-tdd/count.test.js

@@ -22,3 +22,10 @@ test("should count multiple occurrences of a character", () => {
 // And a character char that does not exist within the case-sensitive str,
 // When the function is called with these inputs,
 // Then it should return 0, indicating that no occurrences of the char were found in the case-sensitive str.
+
+test("should return 0 when character does not exist in the string", () => {
+  const str = "hello world";
+  const char = "z";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});

Sprint-3/2-practice-tdd/get-ordinal-number.js

@@ -1,5 +1,12 @@
 function getOrdinalNumber(num) {
-  return "1st";
+  const suffixes = ["th", "st", "nd", "rd"];
+  const lastTwoDigits = num % 100;
+
+  if (lastTwoDigits >= 11 && lastTwoDigits <= 13) {
+    return num + "th";
+  }
+  const suffix = suffixes[(lastTwoDigits % 10)] || "th";
+  return num + suffix;
 }
 
 module.exports = getOrdinalNumber;

Sprint-3/2-practice-tdd/get-ordinal-number.test.js

@@ -8,6 +8,24 @@ const getOrdinalNumber = require("./get-ordinal-number");
 // When the number is 1,
 // Then the function should return "1st"
 
-test("should return '1st' for 1", () => {
+test("append 'st' to numbers ending in 1, except those ending in 11", () => {
   expect(getOrdinalNumber(1)).toEqual("1st");
+  expect( getOrdinalNumber(21) ).toEqual("21st");
+  expect( getOrdinalNumber(131) ).toEqual("131st");
 });
+
+test("append 'nd' to numbers ending in 2, except those ending in 12", () => {
+    expect( getOrdinalNumber(2) ).toEqual("2nd");
+    expect( getOrdinalNumber(22) ).toEqual("22nd");
+    expect( getOrdinalNumber(132) ).toEqual("132nd");
+});
+test("append 'rd' to numbers ending in 3, except those ending in 13", () => {
+  expect(getOrdinalNumber(3)).toEqual("3rd");
+  expect( getOrdinalNumber(33) ).toEqual("33rd");
+    expect( getOrdinalNumber(133) ).toEqual("133rd");
+});   
+test("append 'th' to numbers which are not ending in 1, 2, 3", () => {
+  expect(getOrdinalNumber(5)).toEqual("5th");
+  expect( getOrdinalNumber(24) ).toEqual("24th");
+    expect( getOrdinalNumber(138) ).toEqual("138th");
+});   

Sprint-3/2-practice-tdd/repeat.js

@@ -1,5 +1,19 @@
-function repeat() {
-  return "hellohellohello";
+function repeat(str , count) {
+  if (count < 0) {
+    throw new Error("Count must be a non-negative integer");
+  }
+  if (count === 0) {
+    return "";
+  }
+
+  let result = "";
+  for (let i = 0; i < count; i++) {
+    result += str;   
+  }
+
+  return result;
 }
+  console.log(repeat("hello", 2));
+
 
 module.exports = repeat;

Sprint-3/2-practice-tdd/repeat.test.js

@@ -1,9 +1,5 @@
 // Implement a function repeat
 const repeat = require("./repeat");
-// Given a target string str and a positive integer count,
-// When the repeat function is called with these inputs,
-// Then it should:
-
 // case: repeat String:
 // Given a target string str and a positive integer count,
 // When the repeat function is called with these inputs,
@@ -20,13 +16,29 @@ test("should repeat the string count times", () => {
 // Given a target string str and a count equal to 1,
 // When the repeat function is called with these inputs,
 // Then it should return the original str without repetition, ensuring that a count of 1 results in no repetition.
-
+test("should return the original string when count is 1", () => {
+  const str = "world";
+  const count = 1;
+  const repeatedStr = repeat(str, count);
+  expect(repeatedStr).toEqual("world");
+});
 // case: Handle Count of 0:
 // Given a target string str and a count equal to 0,
 // When the repeat function is called with these inputs,
 // Then it should return an empty string, ensuring that a count of 0 results in an empty output.
-
+test("should return an empty string when count is 0", () => {
+  const str = "test";
+  const count = 0;
+  const repeatedStr = repeat(str, count);
+  expect(repeatedStr).toEqual("");
+});
 // case: Negative Count:
 // Given a target string str and a negative integer count,
 // When the repeat function is called with these inputs,
 // Then it should throw an error or return an appropriate error message, as negative counts are not valid.
+test("should throw an error for negative count", () => {
+  const str = "error";
+  const count = -2;
+
+  expect(() => repeat(str, count)).toThrow("Count must be a non-negative integer");
+});